The National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory (LLNL) is the world's largest and most powerful laser system. Experimental physicist Tammy Ma explores how and why scientists and engineers are working hard to demonstrate sustainable fusion burn - the same reaction that occurs in the sun - to one day harness as a source of limitless, clean energy. Series: "Lawrence Livermore National Lab Science on Saturday" [Science] [Show ID: 31523]